Электронный каталог

Статья

Ablikim, M.
Measurements of *S Electromagnetic Form Factors in the Timelike Region Using the Untagged Initial-State Radiation Technique / M.Ablikim, O.Bakina, I.Boyko, G.Chelkov, D.Dedovich, I.Denysenko, P.Egorov, A.Guskov, Y.Nefedov, A.Sarantsev, A.Zhemchugov, [a.o.] // Physical Review D [Electronic resource]. – 2024. – Vol. 109, No. 3. – P. 034029. – URL: https://doi.org/10.1103/PhysRevD.109.034029. – Bibliogr.: 64.

The process eþe− → Σþ ¯Σ− is studied from threshold up to 3.04 GeV=c2 via the initial-state radiation technique using data with an integrated luminosity of 12.0 fb−1, collected at center-of-mass energies between 3.773 and 4.258 GeV with the BESIII detector at the BEPCII collider. The pair production cross sections and the effective form factors of Σ are measured in eleven Σþ ¯Σ− invariant mass intervals from threshold to 3.04 GeV=c2. The results are consistent with the previous results from Belle and BESIII. Furthermore, the branching fractions of the decays J=ψ → Σþ ¯Σ− and ψð3686Þ → Σþ ¯Σ− are determined and the obtained results are consistent with the previous results of BESIII.



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 332.7 - Встречные е+е- и мю+мю- пучки